Insert for mold for forming concrete blocks



FIG. 1 is a perspective view of an insert for a mold for forming concrete blocks.

FIG. 2 is a reduced rear elevational view of FIG. 1.

FIG. 3 is a front elevational view of FIG. 1.

FIG. 4 is a top plan view of FIG. 1.

FIG. 5 is a right side elevational view of FIG. 1.

FIG. 6 is a left side elevational view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1. 

The ornamental design for an insert for a mold for forming concrete blocks, as shown and described. 